Hi does anyone know why my vag VS450 can not connect to my 1993 audi coupe, it works for models 1988 onwards but on scanning it fails to connect. I can not figure out why my fuel pump has stopped priming along with no spark from plugs and thought the scanner would help me out. It is a project car ive had it running once it slightly over heated cut out, now cranks fine but thats it any advise welcome as im learning as i go.

 

Thanks

Hi Louisa

Chances are that the scan tool is not set to communicate with the OBD which is running only on the K Line (early diagnostics)....you may have the option to switch to this line only and it will work okay.

I would check the crankshaft sensor is putting a signal out if not then change it and see how you get on 

Thanks for replying, i havent been able to find crankshaft sensor yet but I'll give it another try, ive no previous mechanic experience so im just feeling my way and learning as i go, so sorry if i seem a bit dum but with this car being so old could the eye of the distributor known as the ignition pulse sensor be the same as a crankshaft sensor? Or am i just getting confused? Thanks for the idea about the K line I'll have to read up on it first as ive not heard of it before. Thanks